公开(公告)号：US09935454B2

公开(公告)日：2018-04-03

申请号：US14733568

申请日：2015-06-08

Applicant: ABB Technology AG

Inventor： Jens Tepper ,  Abdelbahi Tamzarti ,  Nils Leenen ,  Stefan Staudinger

IPC: H02H7/04 ,  H01F27/40 ,  H02H1/00 ,  H02H3/08 ,  H02H3/093

CPC classification number: H02H7/04 ,  H01F27/402 ,  H02H1/0023 ,  H02H3/083 ,  H02H3/0935 ,  H02H7/042

Abstract: An exemplary transformer protection system including a protective housing having a transformer which is arranged in the protective housing, a transformer core, and at least one primary-side electrical winding and a secondary-side electrical winding which is magnetically coupled to the primary-side electrical winding. The protection system also includes at least one detection apparatus for a measurement variable from which the occurrence of an interference arc within the protective housing can be derived, and an evaluation unit for generating a fault signal from the measurement variable of the at least one detection apparatus in the case of an interference arc. Further, the protection system includes at least one rapid-earthing apparatus for at least one of the electrical windings which is intended to be activated by the fault signal, wherein the rapid-earthing apparatus is designed in such a way that effective electrical earthing immediately after activation of the fault signal is ensured.